Lenovo Thinkstation P920 Manual page 6

Memory configurator

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Figure 2 shows the recommended DIMM slot fill order for each CPU installed in the

system.

Figure 2 – P920 DIMM Slot Fill Order Recommendations

# of DIMMs per CPU

1 DIMM

2 DIMMs

3 DIMMs

4 DIMMs

5 DIMMs

6 DIMMs

7 DIMMs

8 DIMMs

Note: Memory configurations using 5 DIMMs or 7 DIMMs per CPU are not recommended as they

are unbalanced configurations that could result in memory performance degradation.

- 5 DIMM per CPU and 7 DIMM per CPU configurations will function, but should be avoided as

they present an unbalanced load to the CPU that could result in memory bandwidth degradation.

- 8 DIMM per CPU configurations represent an unbalanced load to the CPU, but these

configurations can be used where overall memory capacity takes priority over bandwidth. For

maximum memory bandwidth, Lenovo recommend optimizing on 6 DIMMs per CPU if possible.

DIMM slots used for each CPU

DIMM 3

DIMM 3, DIMM 5

DIMM 1, DIMM 3, DIMM 5

DIMM 3, DIMM 4, DIMM 5, DIMM 6

Not Recommended

DIMM 1, DIMM 2, DIMM 3, DIMM 4, DIMM 5, DIMM 6

Not Recommended

DIMM 1, DIMM 2, DIMM 3, DIMM 4, DIMM 5,

DIMM 6, DIMM 7, DIMM 8

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